What are the best ways to prevent decay on margins of crowns?

You probably did have a root canal on this tooth. The darkness on your gum is the dark root showing through the tissue. Puffiness on the crown can be cause by several things. You crown may not fit well or may be too thick at the gumline. Another possibility is you may have a sensitivity to any...

It does sound like the post has become loose.  It is very important that you have this redone soon as you can get decay in the tooth that can quickly destroy what is left.  Find a good esthetic dentist who can determine if the tooth is savable and if so, what it will take to properly...

You have an orthopedic problem and a cosmetic problem.  Placement of crowns may make future treatment more difficult.I would need to evaluate a case like yours more closely but a combination of orthodontics and orthopedics would be ideal.  It appears that you have a functional...

It may be that the new crown does not have a tight enough fit or broad enough contact. Since this is the second one placed,though, it may be more likely that your bite or occlusal contacts need to be adjusted. An upper molar may have a plunging cusp that is hitting right in between the two lower...

A retainer can be worn over crowns. However, the retainer will probably not fit since the crowns have been made and the teeth are a different size. What needs to be done is to have a new retainer made that will hold the teeth in place and fit with your new crowns.

Everybody wants a whiter and brighter smile. If finance is an issue, it's a good idea to try some over-the-counter whitening products, for example crest strips. As far as the three crowns that you want to replace, it might be a good idea to do the crowns one at a time. Start with the one that is...